1998/07/01 by Bin Wang, Ru-Keng Su · 1 citation
Mathematics · Physics and Astronomy · #Algebraic Geometry and Number Theory #Black Holes and Theoretical Physics #Homotopy and Cohomology in Algebraic Topology #gr-qc
paper · pdf · doi:10.1016/s0370-2693(98)00642-x
published as Phys.Lett. B432 (1998) 69-73 · Latex version, to be published on Phys.Lett.B
openalex publication_date 1998/07/01 · arxiv created 1998/07/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
According to different topological configurations, we suggest that there are two kinds of extreme black holes in the nature. We find that the Euler characteristic plays an essential role to classify these two kinds of extreme black holes. For the first kind of extreme black holes, Euler characteristic is zero, and for the second kind, Euler characteristic is two or one provided they are four dimensional holes or two dimensional holes respectively.